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Summary of Critical and Significant Accounting Policies (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Leases
Deferred Revenue	$ 13.3	$ 18.4
Allowance for Doubtful Accounts and Bilinig Adjustments
Leases
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount	$ 3.1	$ 3.9	$ 4.1	$ 3.6
Minimum [Member]
Leases
Lessee, Operating Lease, Term of Contract	2 months
Property, Plant and Equipment, Estimated Useful Lives	three
Maximum [Member]
Leases
Lessee, Operating Lease, Term of Contract	11 years
Property, Plant and Equipment, Estimated Useful Lives	five years